Home / 1,476.90-2,215.28-381.26

Finding the Fourth Proportional to 1,476.90, 2,215.28 and 381.26

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Solution

The fourth proportional to 1,476.90, 2,215.28 and 381.26 is: 571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.90 : 2,215.28 = 381.26 : x
  2. Step 2: Convert to fraction form
    1,476.90/2,215.28 = 381.26/x
  3. Step 3: Cross multiply
    1,476.90x = 2,215.28 × 381.26
  4. Step 4: Simplify right side
    1,476.90x = 844,584.67
  5. Step 5: Solve for x
    x = 844,584.67/1,476.90
  6. Step 6: Final answer
    x = 571.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.